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Finding the Fourth Proportional to 78,896.96, 118,157.20 and 43,749.44

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Solution

The fourth proportional to 78,896.96, 118,157.20 and 43,749.44 is: 65,519.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,896.96 : 118,157.20 = 43,749.44 : x
  2. Step 2: Convert to fraction form
    78,896.96/118,157.20 = 43,749.44/x
  3. Step 3: Cross multiply
    78,896.96x = 118,157.20 × 43,749.44
  4. Step 4: Simplify right side
    78,896.96x = 5,169,311,331.97
  5. Step 5: Solve for x
    x = 5,169,311,331.97/78,896.96
  6. Step 6: Final answer
    x = 65,519.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.